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                                                since i edited my post from earlier the comments got deleted. to the one who asked how they meet.
they meet irl at the wedding but it isnt actually their first time meeting each other. they've met a few times years ago but only ML remembers.
why they met at the wedding?
the groom is a former teammate of YC. MC is a close friend of groom so he got an invite to the wedding too.                                            

 
		
https://www.starlightstream.net/that-guy-is-this-guy
reposting this because this site link isnt in NU (and i know most of us get our links from there) i just happened to find it when i was finishing the novel. it's also better translated here.